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This section has no chief editors.

Themes that aim to minimize CO2 emissions resulting from fossil fuels will be the primary focus of this specialty section of Frontiers in Energy Research . Given the size and complexity of our current energy production, there is no “silver bullet” that would magically reduce CO2 emissions. The progress we aim to report in Advanced Fossil Fuel Technologies are those components of many that must be applied in order for CO2 emissions to be reduced annually on the Gt-scale. We welcome manuscripts on advanced power systems that have increased efficiency and have lower CO2 emissions (e.g., oxycombustion, coal gasification, combined cycles, etc.); carbon capture and utilization (e.g., enhanced oil and gas recovery using CO2 , mineral carbonation, CO2 conversion to fuel, etc.); atmospheric carbon removal (e.g., direct air capture, bioenergy, accelerated weathering, etc.); polygeneration methods that rely on biomass gasification leading to low-carbon fuels for the transportation sector; and systems integration and optimization that incorporate renewable energy into coal or gas with CCS. In particular, manuscripts covering topics in carbon capture and storage and utilization will be directed toward the section that specifically focuses on these topics.

With approximately 7 billion people on the planet and global CO2 emissions on the order of 30 Gigatons (Gt), per capita emissions equal just over 4 Gt CO2 . However, in energy-intensive countries such as the United States, per capita emissions are as high as 17.5 tons of CO2 per person each year, which is the equivalent mass of a family of African elephants. These anthropogenic emissions are sourced from our dependence on fossil fuels, with an approximate distribution of 40%, 40%, and 20%, from oil, coal, and natural gas, respectively. It is clear that advanced energy conversion systems focused on reduction of CO2 from fossil fuels will be required in order to minimize negative climate change impacts. Given that fossil fuels constitute the majority of our energy portfolio today, it is crucial that we consider new approaches with minimal environmental impacts as our reliance on these energy resources continues.

All manuscripts must be submitted directly to the section Advanced Fossil Fuel Technologies, where they are peer-reviewed by the Associate and Review Editors of the specialty section.

Articles published in the section Advanced Fossil Fuel Technologies will benefit from the Frontiers impact and tiering system after online publication. Authors of published original research with the highest impact, as judged democratically by the readers, will be invited by the Chief Editor to write a Frontiers Focused Review - a tier-climbing article. This is referred to as "democratic tiering". The author selection is based on article impact analytics of original research published in all Frontiers specialty journals and sections. Focused Reviews are centered on the original discovery, place it into a broader context, and aim to address the wider community across all of Energy Research.